Yes, if you have a PSA AK47 GF3, GF4, or GF5 then this Century Arms AK Chevron Muzzle Brake will fit and function as intended.
From what information I could find the muzzle of the BFT47 is threaded for 14x1LH threads. So the Century Arms AK Chevron Muzzle Brake will work with that rifle.
Yes, the Century Arms VSKA uses M14x1 LH threads that would make it compatible with this Century Arms AK Chevron Muzzle Brake.
No. Your Golani Sporter uses a thread pitch of 13x1mm while this Century Arms AK Chevron Muzzle Brake has a thread pitch of M14x1 LH.
Century Arms does not provide the diameter of the AK Chevron Muzzle Brake, I would recommend reaching out to them directly for more information.
No, this is not compatible with 9mm.
No, that rifle has a different barrel thread.
Yes, this being a left hand thread means the rule is reversed.
This may or may not be the case. The RAK-47-C will be compatible while the RAK47-P-SF would not be.
Unfortunately, not. That firearm should have M26x1.5LH muzzle threading.